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 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Shaida Anwer Kakil Preparation and Investigation of Photodetectors based on ZnO Crystals. 2020 г., 108 стр., мягкий переплет The nanocrystal and microcrustal ZnO are formed by Atmosphere Pressure Chemical vapor deposition (APCVD) on single crystalline as well as Porous Silicon substrate. ZnCl2 and O2 were used as Zn and O sources respectively, while N2 used as a carrier gas. The effect of deposition temperatures in range 450-750oC on the formation and ZnO crystlinity... | 17170 тг  |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Amit Singh Luminescence in Rare Earths. Lanthanides Surface Modification by Amino Acids 2020 г., 272 стр., мягкий переплет Recent trend of research in smart materials in all possible realms of application also encompass the luminescence properties and the modification of the materials to achieve it.The book explores into the structure of rare earths and presents its analysis with focus on lanthanides. The novel luminescence properties with increased efficiency are... | 51551 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Promi Halder Planar and Nonplanar Solitary, Shock Waves. Planar and Nonplanar Solitary, Shock Waves in a ThreeComponent Relativistic Degenerate Dense Plasma 2020 г., 124 стр., мягкий переплет A rigorous theoretical investigation has beenmade on nonlinear propagation of electrostatic perturbation modes(ion-acoustic and dust-ion-acoustic) in an unmagnetized,collisionless, degenerate plasma (containing bothnon-relativistic and ultra-relativistic degenerate electrons,non-relativistic degenerate ions, and without/with charged dustgrains).... | 32741 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Дюсенгалий Бигалиевич Сыздыков Струнные кольца и чёрные дыры. 2020 г., 52 стр., мягкий переплет Гипотеза о присутствия вокруг любой барионной отрицательной материи объяснило множество проблем, вот некоторые:1. Объяснен принцип движения тел в космосе вокруг центральных тел ( планет и... | 20988 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Segun Adebajo World History Scientific Updates. 2019 г., 80 стр., мягкий переплет The book is all about global crises of developments and explains all missing links in creation accounts conflicts between scientific and religious discussions to dates. The book also jump-starts lazy students and provides ready solutions to serious students and professionals problems.The book also narrates an affirmative predictions on end time... | 23919 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Dr Amira Mohamed Regeneration of the inner ear hair cells. 2019 г., 168 стр., мягкий переплет Hearing loss is a major health problem affecting millions of people: the World Health Organization (WHO, 2002) estimated that, 250 million people suffered from disabling hearing loss and that two-thirds of them live in the developing world (Holley, 2005). In addition, 1 in 1000 children are born with severe to profound hearing loss, and people 70... | 42533 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Safiqul Islam Extragalactic Astronomy. Wormholes and Gravastars 2019 г., 184 стр., мягкий переплет This book deals with some theoretical features of wormholes and gravastars. In chapter one, we have discussed the definition of wormholes and gravastars and also the works in the spheres by various distinguished authors. In chapter two, we discuss on wormholes supported by two non interacting fluids. The exact wormhole solutions are found in the... | 43101 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Jyotsna Chauhan Structure determination of 17 single crystals by x-ray crystallography. 2019 г., 172 стр., мягкий переплет This book contains 17 crystals structures solved by X-Ray Crystallography. These crystals are 1)?-4(chlorophenoxy)-?-(1,1-dimethylethyl)1H-1,2,4-triazole-1-ethanol(tridimenol)2) ?-4(-idophenoxy)-?-(1,1- dimethylethyl)1H-1,2,4-triazole-1-ethanol 3) N –(2,6 dime-thylphenyl)-N-(2-Keto-1-methylbuty1)-3-hydroxypropanamide 4) ?-(phenoxy)-?-(1,1-... | 42675 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Shouvik Chaudhuri Pressurised Water Nulear Reactors. Dynamics, Modeling and Simulation 2019 г., 164 стр., мягкий переплет The Fukushima Nuclear Accident (2011) tipped over the status quo of the nuclear energy sector in the favour of fervent sceptics & paved the way for a severe global setback of public perception regarding nuclear power plants. In the subsequent years, a nuclear power phase-out operation began to gain momentum amongst nations of the EU and Asia,... | 42391 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Jean-Marc Denis Yarkovsky Effect Of Online Archives Of Astronomical Imaging. 2019 г., 212 стр., мягкий переплет The identification of known asteroids on existing CCD pictures would allow us to obtain accurate astrometric and photometric asteroid properties. Some asteroids might have ambiguous orbital elements, thus their identification along with their exact positions on multiple picture frames could significantly improve their orbital elements.... | 46515 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Prangon Das and Tanvir Ahmed CNN Based Person Specific Face Recognition & Detection. Convolution Neural Network Based Person SpecificFace Recognition & Detection 2019 г., 64 стр., мягкий переплет Face recognition and detection plays an important role in biometric security in the modern era. It is also a very trending topic in the area of computer vision. Man has been trying to achieve more and more accuracy since the very beginning of image processing. But for a low end embedded application the task has always been quite challenging.... | 23350 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Ninad Velhal and Vijaya Puri Composite Materials For Microwave Applications. Electromagnetic Properties of Chemically Synthesized Conducting Polymer/Hexaferrite Composites 2019 г., 172 стр., мягкий переплет This book provides the detailed information about the synthesis and characterization of conducting polymer, ferrite and its composite materials. also it provides the theoretical aspects of physical and chemical properties of polymer, ferrite and composite materials also the basics of microwaves and its measurement techniques. This book divided... | 42675 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Dr. B M Manohara Thermoluminescence and dielectric properties of CdSiO3 nanoparticles. Dosimeters and Low frequency applications 2019 г., 76 стр., мягкий переплет Thermoluminescence (TL) is extensively used for the study of defects in insulators and semiconducting materials. TL is observed when a part of the irradiation energy is used to transfer electrons to traps. Radiation with appropriate energetic photons causes photo-ionization of the luminescence centers brings the electrons to the conduction band... | 26681 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Ahmed Alhashimi Determination of Temperature Difference Between Urban and Rural areas. 2019 г., 108 стр., мягкий переплет Air temperature is considered one of the important atmosphere elements because of its wide effects on the climate variables and climate system, besides its effects on human life. This research aims at estimating increase of air temperature in both - city center and rural side, based on increased population in city center and lesser population than... | 32173 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика S. N. Arjun Kumar Rural Entrepreneurship in Small-Scale Industries. 2019 г., 296 стр., мягкий переплет There is no proper entrepreneurial culture in India. There is more orientation towards becoming an employee rather than being an entrepreneur. In view of the vital role being played by the small scale sector, in generating employment, developing rural economy, reducing regional imbalances, reducing income disparities, earning more foreign exchange... | 44659 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Mahesh Sankanahalli Srinivasa Setty and Somashekar Rudrappa Crystal Structural Differences among Varieties of Silk Fibers. 2019 г., 204 стр., мягкий переплет The term 'silk' refers to a wide range of filaments spun by several species of Lipidoptera and Arthropod to build structure external to the body such as cocoons and webs. Silk fibres are produced from various types of ectodermal glands found in the mites, spiders and several groups of insects. Silk is the product of silk-worm (Bombyx mori)... | 43812 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Ashraf Balabel Level Set Method for Numerical Modeling of Two-Fluid Interface Dynamic. 2019 г., 52 стр., мягкий переплет Carefully executed numerical simulations can virtually replace the experimental measurements. Several challenges are existed in the numerical simulation of turbulent two-fluid systems. On one hand, turbulence itself remains an unsolved problem because our traditional conceptual and technical tools are inadequate. On the other hand, the physical... | 22924 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Andi Yusra High Strength Concrete with Variation of Additives. 2019 г., 56 стр., мягкий переплет The result of High strength concrete mechanical properties test showed that at the age of 56 days with the addition of 15% palm shells fly ash gave result of strength 780,92 kg/cm2, follow by coal fly ash (10%) with strength result 707,355 kg/cm2 and rice husk ash (5%) 650,767 kg/cm2. There is addition in concrete strength at 56 days compared to... | 23066 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Rohin Kaushik A Parametric Study on Piled Raft Foundation. 2019 г., 72 стр., мягкий переплет This book represents a Parametric study of piled raft behavior by various combinations such as diameter of piles, spacing of piles, length of piles. Load carrying capacity of piled raft foundation system increases with the increase in the length of the pile. Settlement of the foundation reduces as compared to other foundation systems. Load... | 23635 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Samuel Ugochukwu Ele,Patrick Akata Nwofe and Chinenye Ezekoye Properties of Magnesium doped Antimony Sulphide Thin Films. Applications of Chemically Deposited Magnesium doped Antimony Sulphide Thin Films in Optoelectronic Devices 2019 г., 84 стр., мягкий переплет This Book "Properties of Magnesium doped Antimony Sulphide Thin Films" focuses on the Morphological and optical Properties of Chemically deposited Magnesium doped Antimony sulphide thin films for application in optoelectronic devices and in other related applications. The research was carried out both in Ebonyi State University Abakaliki... | 24061 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Said Benramache,Said Lakel and Foued Chabane The Correlation of the Optical Properties of ZnO Thin Films. 2019 г., 52 стр., мягкий переплет In the present work, we used the optical properties of pure and doped zinc oxide thin films as the n-type semiconductor. The thin films were deposited at different precursor molarities by ultrasonic spray and spray pyrolysis techniques also at different substrate temperatures, the ZnO doped with various dopant’s such as Al, In, Co, Ni, Sn, V,... | 22924 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Medhat Ammar and Doaa Oda Design of Interplanetary Trajectories using Gravity Assist. Space Mechanics 2019 г., 160 стр., мягкий переплет The book represents a straightforward method in order to design an interplanetary mission using gravity assist and patched conics sections to constitute the total trajectories. The complete knowledge and relations you need are inserted in chapters one and two, the technique of calculations were discussed in details in chapter three, finally the... | 46120 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Dr. Vanarajsinh Solanki,Dr. Abhay Dasadia and Dr. Pramita Mishra Experimental Techniques for Material Characterization-Part-1. 2019 г., 60 стр., мягкий переплет This book focus on different material characterization tools focusing on morphology/topology and structural properties of the materials. In the chapter related to morphological characterization tools the book mainly discussed Transmission Electron Microscope (TEM), Scanning Electron Microscope (SEM), and Atomic Force Microscope (AFM) whereas... | 23208 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Farhan Ali and A. zaib Mathematical Modeling of Steady and Unsteady Flows of an Eyring-Powell. Nanofluid Near Stagnation Point over a stretching sheet 2019 г., 68 стр., мягкий переплет The study of nanofluid has become increasingly last few years. This is mainly due to its many applications in engineering and industry. It plays an imperative role in increasing the heat transport rate than that of base fluid, base fluids say ethylene glycol, ethanol, kerosene oil and water. In this steady, as well as unsteady boundary layer flow... | 14781 тг |
 | Отрасли знаний: Естественные науки -> Астрономия и астрофизика Jens M?ller Characterisation of local aluminum-alloyed contacts. To silicon solar cells 2014 г., 124 стр., мягкий переплет We analyze in this work the recombination at local aluminum alloyed contacts, which are realized by local laser ablation of a dielectric stack and subsequent full area screen printing of aluminum paste. The contact formation occuring during a final rapid thermal anneal is quantitatively described for the first time. We focus in this work to... | 32258 тг |
